Do we go forward an hour? Shall we go back an hour? At each change of time, the same question arises. If for some the modification is done without a hitch, for others the repercussions are real. According to a study conducted by a team at the University of Michigan, DNA plays a role in the impact of the time change on individuals.
Indeed, those whose genetic profile makes them more likely to be early risers the rest of the year adapting to the time change in a matter of days. Conversely, “night owls” could take more than a week to regain good quality sleep. These findings were published in the journal Scientific Reports.
This study looked at the sleep monitoring of 831 doctors in the first year of post-medical school training. The researchers calculated the “chronotype” genomic predisposition information. People with low scores were genomically predisposed to be early risers and those with high scores were “night owls”. The researchers then examined changes in their sleep patterns between the week before summertime and the following weekend.
In general, the difference in weekday wake-up times after daylight saving time between the two groups was not significant. The time they fell asleep on the nights before workdays, and the times they slept and woke up on weekends varied widely between the two groups. If the early risers had adjusted their sleep hours on Tuesday, the night owls were still out of control the following week.
“We already know that summertime has an effect on heart attack rates, traffic accidents, and other incidents, “recalls Margit Burmeister, the neuroscientist, and geneticist at UM, lead author of this article. Before adding:” These data come from direct surveillance and genetic testing allow us to directly see the effect and see the differences between people with different circadian rhythm patterns that are influenced by both genes and environment. To put it clearly, the time change makes everything worse and for no good reason. ”One more argument for permanently eliminating daylight saving time?